Building block



April 1 1924. 1,489,137

E. LECHAT BUILDING BLOCK Filed Nov. 26. 192i 3 Sheets--Sheet 1 April 1,1924. 1,489,137

E. LECHAT BUILDING BLOCK Filed Nov 26. 1921 3 Sheets-Sheet 2 April 1,1924. I 1,489,137

- E. LECHAT BUILDING BLOCK Filed Nov. 26. 1921 3 Sheets-Sheet By I,

Patented Apr. 1, 1924.

UNITED STATES EDMOND LEGHAT, or NANrnsrRancE.

BUILDING BLOCK.

Application filed November 26, 1921. Serial No. 517,911.

To all whom it may concern:

Be it known that I, EDMOND LEOHAT, a citizen of the Republic of France, residing in Nantes, Loire-Inferieure, F rance, and whose p0st-0ffice address is 1 Quai .Jean-Bart, have invented'certain new and useful Improvements in Building Blocks; and I do iereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The watertight building block which is the object of this invention is constituted by an agglomeration of slag or sand, or of any other product capable to agglomerate with lime or cement, such as foundry dross and ground fragments of construction material.

The essential characteristic of this building block, which may be hollow or solid and of any shape, consists in that it comprises vertically in the middle or towards the middle of the solid portions constituting a partition, if the block is hollow, or along the whole height if the block is solid, and parallel to the two faces of the block, a kind of p watertight wall constituted by a thin layer of fine concrete, rich in binding and moisture-proof, which unites the two parts of the agglomerate block.

The block as has been explained is absolutely watertight for moisture coming from its external face and trying to proceed by surface tension in the agglomerated material constituting it, cannot get across the block where it is hollow, in the case of the hollow blocks owing to the cavities themselves. In the solid portions this moisture can only cross about one half of the block for it is stopped entirely by the wall of moisture-proof concrete arranged on the median region of these solid portions, which prevent it from reaching the internal surface of the block which will remain dry.

The'appended drawings show by way of examples a few modes of execution of my invention.

Fig. 1 is a longitudinal section of a hollow block.

Fig. 2 is a transverse section of the block along the central axis.

Fig. 3 is a horizontal section of the above block.

Fig. 4 is a horizontalsection of another kind of hollow block.

Fig. 5 is a front view of a hollow building block in the watertight portion of which are provided small channels facilitating the draining of the water and guiding it when necessary.

Fig. 6 is a transverse section of same.

Fig. 7 is a plan view.

Figs. 8, 9 and 10 are respectively a front view, a side view and a plan view of a cor ner building block. I

Fig. 11 is a plan view of a building block designed for the corner jointing of buildmgs.

Figs. 12 and 13 are similar plan views of two building blocks for door and window jambs.

In the example shown Figs. 1 to 3, the block comprises the hollow parts or cavities a, limited by a central wall 5, two lateral sides 0, 0 and two faces d, (i, one of which must constitute the front face and the other the back face of the block.

In the verticalaxis of the block, and parallel to the face d, d, is disposed the watertight wall 6, constituted by a thin layer of fine concrete, rich in binding and moistureroof, which unites the two parts, front and back of the block, formed by the agglomerate so as to obtain a rigid whole.

In the alternative construction of the block shownin Fig. 4, the hollows are constituted by the union of two blocks next to one another, and the watertight, wall 6 is arranged within the central solid portion.

The building block, Figs. 5 to 7, comprises also two parts (i, d, the vertical sides of which constitute the front and the back and they are united bythe watertight wall 6 in which are formed channels 6 which facilitate the draining of the water and guide it into the cavities or hollows a the thick lines f indicate the laying mortar.

Figs. 8 to 10 represent a corner building block in which the special disposition of the watertight wall is the same as in Figs. 5 to 7 and differ only. in that the channel 6 does not exist upon the vertical face g which is intended to constitute an exterior surface.

The building block represented in Fig. 11 which is designed for the corner jointing of buildings comprises two cavities a united together by a watertight wall e provided with a channel 2 The building blocks in Figs. 12 and 13 which are designed for door and window jambs, comprise also a watertight wall 6 one end of which engages a rabbet h arranged to receive the door or window linings.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. A water-tight building block in agglomerated material comprising; solid parts situated on both sides of its axis; an intermediate watertight wall substantially parallel with the two exterior surfaces of the building block and constituted by a binding moisture proof material, said wall uniting together the two solid parts; and small channels arranged in said watertight wall uated on both sides of its axis; a watertight wall substantially parallel with the two exterior surfaces of the buildin block and consisting in a thin layer of e concrete rich in binding and moisture proof, which unites the two solid parts of the blocks; and small channels arranged in the upper edge of said watertight wall to facilitate and guide the draining of Water.

3. A concrete. building block comprising opposite portions united by an intermediate vertical portion or layer of rich hydraulic cement said layer being shorter than said opposite portions to leave at least one cavity at one end of said layer, the upper and lower edges of said layerha-ving a channel communicating with a cavity.

In testimony that I claim the foregoing as my invention, 1 have signed my name.

EDMOND LECHAT] 

